ISSN:
0021-8383
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
About Ringtransformation of 5-Acetonyl-2-amino-1,3,4-oxadiazolesTreatment of 1 with hydrazine derivatives gives first of all the 5-acetonyl-2-amino-1,3,4-oxadiazole-hydrazones 2 which can be isolated partially. In the second reaction step ringtransformation to the pyrazoles 3 takes place.Hydroxylamine reacts in the same manner to the 3-methyl-5-semicarbazido-isoxazol 4.The pyrazoles 3b and 3h can be dehydrogenated to the carboamoylazo-pyrazoles 5a and 5b.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/prac.19813230615